The ARIMA model equivalency to the additive version of Winters method is the ARIMA(0,1,p+1)(0,1,0) p model The moving-average form of the equation is For the additive version of Winters method (see ...

To determine an exponential smoothing constant roughly proportional to a simple moving average of a given time length, divide the number 2 by one more than the length of the simple moving average ...

The three most common types of moving averages are simple, exponential ... The EMA’s formula uses a weighting multiplier, or smoothing constant, that is based on the specific number of days ...

Crane, D. B., and James R. Crotty. "A Two-Stage Forecasting Model: Exponential Smoothing and Multiple Regression." Management Science 13, no. 8 (April 1966).